AC_CHECK_FUNCS(gethostname \
-closedir mkdir rmdir getrusage get_current_dir_name \
+closedir getrusage get_current_dir_name \
lrand48 logb frexp fmod cbrt setsid \
fpathconf select euidaccess getpagesize setlocale \
utimes getrlimit setrlimit setpgid getcwd shutdown getaddrinfo \